var opvar;
var alphaopvar;

function showmenu() {
opvar = 0.05;
alphaopvar = 5;
document.getElementById('menulink').style.visibility = "hidden";
document.getElementById('hider').style.visibility = "visible";
document.getElementById('menu').style.opacity = opvar;
document.getElementById('menu').style.filter = "alpha(opacity=" + alphaopvar + ")";
document.getElementById('menu').style.visibility = "visible";
slidemenuin();
}

function hidemenu() {
document.getElementById('menu').style.visibility = "hidden";
document.getElementById('menu').style.opacity = 0.05;
document.getElementById('menu').style.filter = "alpha(opacity=5)";
document.getElementById('hider').style.visibility = "hidden";
document.getElementById('menulink').style.visibility = "visible";
}

function slidemenuin() {
if (opvar < 1) {setTimeout("slidemenuin();", 20)}
opvar = opvar + 0.05;
alphaopvar = alphaopvar + 5;
document.getElementById('menu').style.opacity = opvar;
if (alphaopvar > 100) alphaopvar = 100;
document.getElementById('menu').style.filter = "alpha(opacity=" + alphaopvar + ")";
}